Search Results for author: Shengxi Li

Found 12 papers, 6 papers with code

Enhancing Quality of Compressed Images by Mitigating Enhancement Bias Towards Compression Domain

no code implementations27 Feb 2024 Qunliang Xing, Mai Xu, Shengxi Li, Xin Deng, Meisong Zheng, Huaida Liu, Ying Chen

However, these methods exhibit a pervasive enhancement bias towards the compression domain, inadvertently regarding it as more realistic than the raw domain.

Neural Characteristic Function Learning for Conditional Image Generation

1 code implementation ICCV 2023 Shengxi Li, Jialu Zhang, Yifei Li, Mai Xu, Xin Deng, Li Li

The emergence of conditional generative adversarial networks (cGANs) has revolutionised the way we approach and control the generation, by means of adversarially learning joint distributions of data and auxiliary information.

Conditional Image Generation Generative Adversarial Network

Demystifying CNNs for Images by Matched Filters

no code implementations16 Oct 2022 Shengxi Li, Xinyi Zhao, Ljubisa Stankovic, Danilo Mandic

The success of convolution neural networks (CNN) has been revolutionising the way we approach and use intelligent machines in the Big Data era.

Does Text Attract Attention on E-Commerce Images: A Novel Saliency Prediction Dataset and Method

1 code implementation CVPR 2022 Lai Jiang, Yifei Li, Shengxi Li, Mai Xu, Se Lei, Yichen Guo, Bo Huang

E-commerce images are playing a central role in attracting people's attention when retailing and shopping online, and an accurate attention prediction is of significant importance for both customers and retailers, where its research is yet to start.

Multi-Task Learning Saliency Prediction +1

Blind VQA on 360° Video via Progressively Learning from Pixels, Frames and Video

1 code implementation18 Nov 2021 Li Yang, Mai Xu, Shengxi Li, Yichen Guo, Zulin Wang

When assessing the quality of 360{\textdegree} video, human tends to perceive its quality degradation from the viewport-based spatial distortion of each spherical frame to motion artifact across adjacent frames, ending with the video-level quality score, i. e., a progressive quality assessment paradigm.

Visual Question Answering (VQA)

Von Mises-Fisher Elliptical Distribution

no code implementations14 Mar 2021 Shengxi Li, Danilo Mandic

A large class of modern probabilistic learning systems assumes symmetric distributions, however, real-world data tend to obey skewed distributions and are thus not always adequately modelled through symmetric distributions.

Meta-learning based Alternating Minimization Algorithm for Non-convex Optimization

1 code implementation9 Sep 2020 Jingyuan Xia, Shengxi Li, Jun-Jie Huang, Imad Jaimoukha, Deniz Gunduz

In this paper, we propose a novel solution for non-convex problems of multiple variables, especially for those typically solved by an alternating minimization (AM) strategy that splits the original optimization problem into a set of sub-problems corresponding to each variable, and then iteratively optimize each sub-problem using a fixed updating rule.

Matrix Completion Meta-Learning

Reciprocal Adversarial Learning via Characteristic Functions

1 code implementation NeurIPS 2020 Shengxi Li, Zeyang Yu, Min Xiang, Danilo Mandic

For rigour, we first establish the physical meaning of the phase and amplitude in CF, and show that this provides a feasible way of balancing the accuracy and diversity of generation.

Graph Signal Processing -- Part III: Machine Learning on Graphs, from Graph Topology to Applications

no code implementations2 Jan 2020 Ljubisa Stankovic, Danilo Mandic, Milos Dakovic, Milos Brajovic, Bruno Scalzo, Shengxi Li, Anthony G. Constantinides

Many modern data analytics applications on graphs operate on domains where graph topology is not known a priori, and hence its determination becomes part of the problem definition, rather than serving as prior knowledge which aids the problem solution.

BIG-bench Machine Learning

Solving general elliptical mixture models through an approximate Wasserstein manifold

1 code implementation9 Jun 2019 Shengxi Li, Zeyang Yu, Min Xiang, Danilo Mandic

To relieve this issue, we introduce an efficient optimisation method on a statistical manifold defined under an approximate Wasserstein distance, which allows for explicit metrics and computable operations, thus significantly stabilising and improving the EMM estimation.

Widely Linear Complex-valued Autoencoder: Dealing with Noncircularity in Generative-Discriminative Models

no code implementations5 Mar 2019 Zeyang Yu, Shengxi Li, Danilo Mandic

To resolve this issue, we design a new cost function, which is capable of controlling the balance between the phase and the amplitude contribution to the solution.

A universal framework for learning the elliptical mixture model

no code implementations21 May 2018 Shengxi Li, Zeyang Yu, Danilo Mandic

Mixture modelling using elliptical distributions promises enhanced robustness, flexibility and stability over the widely employed Gaussian mixture model (GMM).

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